﻿using System;
using System.Collections.Generic;
using System.Windows.Forms;
using System.Drawing;
using System.Collections;
using System.Data;
using System.Text;

namespace Turtle8
{
    class QueryPrintDGV
    {
        private static StringFormat StrFormat;  // Holds content of a TextBox Cell to write by DrawString
        private static StringFormat StrFormatComboBox; // Holds content of a Boolean Cell to write by DrawImage
        private static Button CellButton;       // Holds the Contents of Button Cell
        private static CheckBox CellCheckBox;   // Holds the Contents of CheckBox Cell 
        private static ComboBox CellComboBox;   // Holds the Contents of ComboBox Cell

        private static int TotalWidth;          // Summation of Columns widths
        private static int RowPos;              // Position of currently printing row 
        private static bool NewPage;            // Indicates if a new page reached
        private static int PageNo;              // Number of pages to print
        private static ArrayList ColumnLefts = new ArrayList();  // Left Coordinate of Columns
        private static ArrayList ColumnWidths = new ArrayList(); // Width of Columns
        private static ArrayList ColumnTypes = new ArrayList();  // DataType of Columns
        private static int CellHeight;          // Height of DataGrid Cell
        private static int RowsPerPage;         // Number of Rows per Page
        private static System.Drawing.Printing.PrintDocument printDoc =
                       new System.Drawing.Printing.PrintDocument();  // PrintDocumnet Object used for printing

        private static string PrintTitle = "";  // Header of pages
        private static DataGridView dgv;        // Holds DataGridView Object to print its contents
        private static List<string> SelectedColumns = new List<string>();   // The Columns Selected by user to print.
        private static List<string> AvailableColumns = new List<string>();  // All Columns avaiable in DataGrid 
        private static int HeaderHeight = 0;


        public static void Print_DataGridView(DataGridView dgv1)
        {

            // Getting DataGridView object to print
            dgv = dgv1;

            // Getting all Coulmns Names in the DataGridView
            AvailableColumns.Clear();
            foreach (DataGridViewColumn c in dgv.Columns)
            {
                if (!c.Visible) continue;
                AvailableColumns.Add(c.HeaderText);
            }

            // Showing the PrintOption Form
            QueryPrintForm qpf = new QueryPrintForm(AvailableColumns);
            if ((qpf.ShowDialog() != DialogResult.OK) || (!qpf.IsOk)) return;

            printDoc.PrinterSettings.PrinterName = qpf.printerName;
            PrintTitle = qpf.PrintTitle;
            SelectedColumns = qpf.GetSelectedColumns();

            RowsPerPage = 0;

            // Showing the Print Preview Page
            printDoc.BeginPrint += new System.Drawing.Printing.PrintEventHandler(PrintDoc_BeginPrint);
            printDoc.PrintPage += new System.Drawing.Printing.PrintPageEventHandler(PrintDoc_PrintPage);

            // Printing the Documnet
            printDoc.Print();
        }

        private static void PrintDoc_BeginPrint(object sender,
                    System.Drawing.Printing.PrintEventArgs e)
        {
            try
            {
                // Formatting the Content of Text Cell to print
                StrFormat = new StringFormat();
                StrFormat.Alignment = StringAlignment.Near;
                StrFormat.LineAlignment = StringAlignment.Center;
                StrFormat.Trimming = StringTrimming.EllipsisCharacter;

                // Formatting the Content of Combo Cells to print
                StrFormatComboBox = new StringFormat();
                StrFormatComboBox.LineAlignment = StringAlignment.Center;
                StrFormatComboBox.FormatFlags = StringFormatFlags.NoWrap;
                StrFormatComboBox.Trimming = StringTrimming.EllipsisCharacter;

                StrFormat.FormatFlags = StringFormatFlags.DirectionRightToLeft;////////

                ColumnLefts.Clear();
                ColumnWidths.Clear();
                ColumnTypes.Clear();
                CellHeight = 0;
                RowsPerPage = 0;

                // For various column types
                CellButton = new Button();
                CellCheckBox = new CheckBox();
                CellComboBox = new ComboBox();

                // Calculating Total Widths
                TotalWidth = 0;
                foreach (DataGridViewColumn GridCol in dgv.Columns)
                {
                    if (!GridCol.Visible) continue;
                    if (!QueryPrintDGV.SelectedColumns.Contains(GridCol.HeaderText)) continue;
                    TotalWidth += GridCol.Width;
                }
                PageNo = 1;
                NewPage = true;
                RowPos = 0;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private static void PrintDoc_PrintPage(object sender,
                    System.Drawing.Printing.PrintPageEventArgs e)
        {
            int tmpWidth, i;
            int tmpTop = e.MarginBounds.Top;
            int tmpRight = e.MarginBounds.Right - 120;

            try
            {
                // Before starting first page, it saves Width & Height of Headers and CoulmnType
                if (PageNo == 1)
                {
                    foreach (DataGridViewColumn GridCol in dgv.Columns)
                    {
                        if (!GridCol.Visible) continue;
                        // Skip if the current column not selected
                        if (!QueryPrintDGV.SelectedColumns.Contains(GridCol.HeaderText)) continue;

                        tmpWidth = (int)(Math.Floor((double)(
                               (double)GridCol.Width /
                               (double)TotalWidth * (double)TotalWidth *
                               ((double)e.MarginBounds.Width /
                                (double)TotalWidth))));


                        HeaderHeight = (int)(e.Graphics.MeasureString(GridCol.HeaderText,
                                    GridCol.InheritedStyle.Font, tmpWidth).Height) + 11;

                        // Save width & height of headres and ColumnType
                        ColumnLefts.Add(tmpRight);
                        ColumnWidths.Add(tmpWidth);
                        ColumnTypes.Add(GridCol.GetType());
                        tmpRight -= tmpWidth;
                    }
                }

                // Printing Current Page, Row by Row
                while (RowPos <= dgv.Rows.Count - 1)
                {
                    DataGridViewRow GridRow = dgv.Rows[RowPos];
                    if (GridRow.IsNewRow)
                    {
                        RowPos++;
                        continue;
                    }

                    CellHeight = GridRow.Height;

                    if (tmpTop + CellHeight >= e.MarginBounds.Height + e.MarginBounds.Top)
                    {
                        DrawFooter(e, RowsPerPage);
                        NewPage = true;
                        PageNo++;
                        e.HasMorePages = true;
                        return;
                    }
                    else
                    {
                        if (NewPage)
                        {
                            // Draw Header
                            e.Graphics.DrawString(PrintTitle, new Font(dgv.Font, FontStyle.Bold),
                                    Brushes.Black, e.MarginBounds.Left, e.MarginBounds.Top -
                            e.Graphics.MeasureString(PrintTitle, new Font(dgv.Font,
                                    FontStyle.Bold), e.MarginBounds.Width).Height - 13);

                            String s = DateTime.Now.ToLongDateString() + " " + DateTime.Now.ToShortTimeString();

                            e.Graphics.DrawString(s, new Font(dgv.Font, FontStyle.Bold),
                                    Brushes.Black, e.MarginBounds.Left + (e.MarginBounds.Width -
                                    e.Graphics.MeasureString(s, new Font(dgv.Font,
                                    FontStyle.Bold), e.MarginBounds.Width).Width), e.MarginBounds.Top -
                                    e.Graphics.MeasureString(PrintTitle, new Font(new Font(dgv.Font,
                                    FontStyle.Bold), FontStyle.Bold), e.MarginBounds.Width).Height - 13);

                            // Draw Columns
                            tmpTop = e.MarginBounds.Top;
                            i = 0;
                            foreach (DataGridViewColumn GridCol in dgv.Columns)
                            {
                                if (!GridCol.Visible) continue;
                                if (!QueryPrintDGV.SelectedColumns.Contains(GridCol.HeaderText))
                                    continue;

                                e.Graphics.FillRectangle(new SolidBrush(Color.LightGray),
                                    new Rectangle((int)ColumnLefts[i], tmpTop,
                                    (int)ColumnWidths[i], HeaderHeight));

                                e.Graphics.DrawRectangle(Pens.Black,
                                    new Rectangle((int)ColumnLefts[i], tmpTop,
                                    (int)ColumnWidths[i], HeaderHeight));

                                e.Graphics.DrawString(GridCol.HeaderText, GridCol.InheritedStyle.Font,
                                    new SolidBrush(GridCol.InheritedStyle.ForeColor),
                                    new RectangleF((int)ColumnLefts[i], tmpTop,
                                    (int)ColumnWidths[i], HeaderHeight), StrFormat);
                                i++;
                            }
                            NewPage = false;
                            tmpTop += HeaderHeight;
                        }

                        // Draw Columns Contents
                        i = 0;
                        foreach (DataGridViewCell Cel in GridRow.Cells)
                        {
                            if (!Cel.OwningColumn.Visible) continue;
                            if (!SelectedColumns.Contains(Cel.OwningColumn.HeaderText))
                                continue;

                            // For the TextBox Column
                            if (((Type)ColumnTypes[i]).Name == "DataGridViewTextBoxColumn" ||
                                ((Type)ColumnTypes[i]).Name == "DataGridViewLinkColumn")
                            {
                                if (Cel.Value == null)
                                    Cel.Value = "";
                                e.Graphics.DrawString(Cel.Value.ToString(), Cel.InheritedStyle.Font,
                                        new SolidBrush(Cel.InheritedStyle.ForeColor),
                                        new RectangleF((int)ColumnLefts[i], (float)tmpTop,
                                        (int)ColumnWidths[i], (float)CellHeight), StrFormat);
                            }
                            // For the Button Column
                            else if (((Type)ColumnTypes[i]).Name == "DataGridViewButtonColumn")
                            {
                                CellButton.Text = Cel.Value.ToString();
                                CellButton.Size = new Size((int)ColumnWidths[i], CellHeight);
                                Bitmap bmp = new Bitmap(CellButton.Width, CellButton.Height);
                                CellButton.DrawToBitmap(bmp, new Rectangle(0, 0,
                                        bmp.Width, bmp.Height));
                                e.Graphics.DrawImage(bmp, new Point((int)ColumnLefts[i], tmpTop));
                            }
                            // For the CheckBox Column
                            else if (((Type)ColumnTypes[i]).Name == "DataGridViewCheckBoxColumn")
                            {
                                CellCheckBox.Size = new Size(14, 14);
                                if (Cel.Value == null)
                                    CellCheckBox.Checked = false;
                                else CellCheckBox.Checked = true;
                                Bitmap bmp = new Bitmap((int)ColumnWidths[i], CellHeight);
                                Graphics tmpGraphics = Graphics.FromImage(bmp);
                                tmpGraphics.FillRectangle(Brushes.White, new Rectangle(0, 0,
                                        bmp.Width, bmp.Height));
                                CellCheckBox.DrawToBitmap(bmp,
                                        new Rectangle((int)((bmp.Width - CellCheckBox.Width) / 2),
                                        (int)((bmp.Height - CellCheckBox.Height) / 2),
                                        CellCheckBox.Width, CellCheckBox.Height));
                                e.Graphics.DrawImage(bmp, new Point((int)ColumnLefts[i], tmpTop));
                            }
                            // For the ComboBox Column
                            else if (((Type)ColumnTypes[i]).Name == "DataGridViewComboBoxColumn")
                            {
                                CellComboBox.Size = new Size((int)ColumnWidths[i], CellHeight);
                                Bitmap bmp = new Bitmap(CellComboBox.Width, CellComboBox.Height);
                                CellComboBox.DrawToBitmap(bmp, new Rectangle(0, 0,
                                        bmp.Width, bmp.Height));
                                e.Graphics.DrawImage(bmp, new Point((int)ColumnLefts[i], tmpTop));

                                string drawString;
                                if (Cel.Value == null)
                                    drawString = "";
                                else drawString = Cel.Value.ToString();
                                e.Graphics.DrawString(drawString, Cel.InheritedStyle.Font,
                                        new SolidBrush(Cel.InheritedStyle.ForeColor),
                                        new RectangleF((int)ColumnLefts[i] + 1, tmpTop, (int)ColumnWidths[i]
                                        - 16, CellHeight), StrFormatComboBox);
                            }
                            // For the Image Column
                            else if (((Type)ColumnTypes[i]).Name == "DataGridViewImageColumn")
                            {
                                Rectangle CelSize = new Rectangle((int)ColumnLefts[i],
                                        tmpTop, (int)ColumnWidths[i], CellHeight);
                                Size ImgSize = ((Image)(Cel.FormattedValue)).Size;
                                e.Graphics.DrawImage((Image)Cel.FormattedValue,
                                        new Rectangle((int)ColumnLefts[i] + (int)((CelSize.Width - ImgSize.Width) / 2),
                                        tmpTop + (int)((CelSize.Height - ImgSize.Height) / 2),
                                        ((Image)(Cel.FormattedValue)).Width, ((Image)(Cel.FormattedValue)).Height));

                            }

                            // Drawing Cells Borders 
                            e.Graphics.DrawRectangle(Pens.Black, new Rectangle((int)ColumnLefts[i],
                                    tmpTop, (int)ColumnWidths[i], CellHeight));

                            i++;

                        }
                        tmpTop += CellHeight;
                    }

                    RowPos++;
                    // For the first page it calculates Rows per Page
                    if (PageNo == 1) RowsPerPage++;
                }

                if (RowsPerPage == 0) return;

                // Write Footer (Page Number)
                DrawFooter(e, RowsPerPage);

                e.HasMorePages = false;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private static void DrawFooter(System.Drawing.Printing.PrintPageEventArgs e,
                   int RowsPerPage)
        {
            double cnt = 0;

            if (dgv.Rows[dgv.Rows.Count - 1].IsNewRow)
                cnt = dgv.Rows.Count - 2; // When the DataGridView doesn't allow adding rows
            else
                cnt = dgv.Rows.Count - 1; // When the DataGridView allows adding rows

            // Writing the Page Number on the Bottom of Page
            string PageNum = PageNo.ToString() + " of " +
                Math.Ceiling((double)(cnt / RowsPerPage)).ToString();

            e.Graphics.DrawString(PageNum, dgv.Font, Brushes.Black,
                e.MarginBounds.Left + (e.MarginBounds.Width -
                e.Graphics.MeasureString(PageNum, dgv.Font,
                e.MarginBounds.Width).Width) / 2, e.MarginBounds.Top +
                e.MarginBounds.Height + 31);
        }



    }
}
